Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mark J Singer, MD, Lcsw

Mental Health Counselor in Richmond, VA · enumerated 2007 · authorized official Mark Singer, Owner.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1497871461

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Registry record

Entity type Organization (Type 2)

Legal business name Mark J Singer, MD, Lcsw

Practice address 605 Twinridge Ln, Richmond, VA, 23235

Phone (804) 330-0816

Enumeration date Mar 22, 2007

Last updated in NPPES Sep 11, 2025

Taxonomy & classification

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 0904000716 (VA) Primary

302F00000X Exclusive Provider Organization Managed Care Organizations · License 0904000716 (VA) Secondary

Authorized official

Name Mark Singer

Title Owner

Phone (804) 330-0816

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2025-09-11. Verify at npiregistry.cms.hhs.gov.

Where is Mark J Singer, MD, Lcsw located?

The practice location on file with NPPES is in Richmond, VA.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.